T-Mobile announced today that a couple new applications are available on several T-Mobile Sidekicks. Twitter and Facebook applications are available now via the Download Catalog on the T-Mobile Sidekick (2008), T-Mobile Sidekick LX '07 (including the Tony Hawk LE), and the T-Mobile Sidekick Slide. The Facebook application is free and the Twitter application is available for a reoccurring monthly charge of $1.99.